Shadows draws his singing and performing style heavily from classic metal bands. He cites Guns N' Roses as his biggest influence, commenting, "I love that band. You can compare us all you want—they're a huge reason why I'm even in a band and even write music." Shadows also commented that he was heavily influenced by Metallica, Megadeth, Pantera, Slayer, Iron Maiden, Ozzy Osbourne, Black Sabbath, Led Zeppelin, AC/DC, Blind Guardian, Dream Theater, Slipknot, Beastie Boys, and Guitarist Scott Taylor. "Megadeth are the reason why Avenged Sevenfold try to infuse a classic metal sound into their music. " said Shadows in an interview, "It's 'cause we have that traditional classic sound that bands like Metallica and Megadeth paved the way for a while ago. That sound crosses over and the extreme metal doesn't," he added.